But this is not the only moving part that has been eliminated. The touch pad is not clickable any more. With the new force touch technology when a long press happens, it is interpreted like a click.
Less moving parts means less possibilities of breaking, making the device more reliable.
The keyboard has also been redesigned to fit in less space using the new scissor system, and it uses individual led in each key to light more efficiently.
The 12 inch. retina screen is going to be the new standard for computer pixel density very soon, as it is already in the smartphone industry.
And the new reversible USB-C port will do the charging and the data transfer through cable.
The innovation and technology used makes this notebook an amazing piece of design. But I am really not sure this single physical port is going to be enough for the average Mac user, at least not enough for me.
Is this notebook going to replace the Air models? It probably will, as it represents all the MacBook Air was designed for. Portability and battery efficiency.